In this paper, an iterative multiwavelength method is proposed for the reconstruction of soot temperature and volume fraction fields in an axisymmetric flame with absorbing, emitting participating media. The Tikhonov regularized method is employed to solve the ill-posed matrix, by which the local radiative source term of two-dimensional space elements are obtained. The effects of the absorption term and the quantity of wavelength selected on the accuracy of reconstruction were evaluated quantitatively. When comparing with the two-color method, the present inversion results show that the accuracy of the multiwavelength method is better and the inversion range is larger than, even with external noise.
Research on the Effect of Soot Self-Absorption on Flame Multispectral Radiation Reconstruction
Journal of Thermophysics and Heat Transfer ; 33 , 1 ; 179-188
2018-09-28
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch